pyFDN.reflection_kernel

pyFDN.reflection_kernel(theta)

2x2 reflection at half-angle theta: [[cos, sin], [sin, -cos]].

Reflects across the line at theta / 2 from the horizontal axis; the half-angle convention keeps the parameterisation consistent with rotation_kernel(). reflection_kernel(pi / 4) is the order-2 Hadamard matrix [[1, 1], [1, -1]] / sqrt(2).

Return type:

ndarray